Rhodium(<scp>ii</scp>)-catalysed tandem aziridination and ring-opening: stereoselective synthesis of functionalised tetrahydrofurans
作者:William P. Unsworth、Nicola Clark、Thomas O. Ronson、Kiri Stevens、Amber L. Thompson、Scott G. Lamont、Jeremy Robertson
DOI:10.1039/c4cc05159a
日期:——
Rh(ii) mediated tandem aziridination and cycloetherification achieves a direct, stereoselective synthesis of the 2-(1-amino-2-hydroxyethyl)tetrahydrofuran motif.
The use of d-mannitol-derived C2-symmetric trienes in tandem metathesis reactions towards valuable lactones
作者:Nassima Riache、Alain Blond、Bastien Nay
DOI:10.1016/j.tet.2008.09.012
日期:2008.11
Chiral lactones were synthesized from D-mannitol. C-2-symmetric triene precursors were constructed with a central relay-olefin allowing the key domino ring-closing metathesis to be achieved. It led to the symmetrical cleavage of the substrate and to the formation of 2 mol of the desired 5- or 6-membered lactone. Attempts to form 7-membered lactones thus far only led to 14-membered macrodiolides instead. (C) 2008 Elsevier Ltd. All rights reserved.